312312200103133 has 4 divisors (see below), whose sum is σ = 313423631420508. Its totient is φ = 311200768785760.

The previous prime is 312312200103073. The next prime is 312312200103227. The reversal of 312312200103133 is 331301002213213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106546429669689 + 205765770433444 = 10322133^2 + 14344538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312312200103133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312312200103098 and 312312200103107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312312200106133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555715658266 + ... + 555715658827.

It is an arithmetic number, because the mean of its divisors is an integer number (78355907855127).

Almost surely, 2^{312312200103133} is an apocalyptic number.

It is an amenable number.

312312200103133 is a deficient number, since it is larger than the sum of its proper divisors (1111431317375).

312312200103133 is a wasteful number, since it uses less digits than its factorization.

312312200103133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111431317374.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 312312200103133 its reverse (331301002213213), we get a palindrome (643613202316346).

The spelling of 312312200103133 in words is "three hundred twelve trillion, three hundred twelve billion, two hundred million, one hundred three thousand, one hundred thirty-three".